Sugar-evaporator



' (No Model.)

G..AUTENRIETH.

Sugar Evaporator. N0. 238,076. Patented Feb; 22, 1881.

ham/aw, Z 71 Van 07? zwb QM )lrbaks. PHOTO-UTHOGRAPHER, WASHINGYON a cUNITED STATES PATENT OFFICE.

CHRISTOPHER AUTENRIETH, OF MARENA, IOWA.

SUGAR-EVAPO RATO R.

SPECIFICATION forming part of Letters latent No. 238,076, dated February22, 1881.

Application filed May 18, 1880.

To all whom it may concern:

Be it known that I, O. AUTENRIETH, a citizen of the United States,residing at Marena, in the county of Ringgold and State of Iowa, haveinvented certain new and useful Improvements in Sugar-Evaporators; andIdohereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertainsto make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

This invention relates to certain improvements in apparatus forevaporating sorghum and other saccharine juices; and it has for itsobject to provide an improved means for feeding the furnace of suchevaporators, and to regulate and control the draft therein to provideagainst burning the sirup, as more fully hereinafter specified. Theseobjects I accomplish by the apparatus illustrated in the accompanyingdrawings, in which- Figure 1 represents a top view of the apparatus Fig.2, a top view of the furnace with the evaporating-pan removed, and Fig.3 is a transverse section.

The letterAindicates a furnace, constructed of brick-work and B, thefire box or chamber, located at the forward end of the same.

The letter 0 indicates a return-flue located at one side of the furnaceproper, leading from the combustion-chamber thereof to the smoke-stackor escape-flue D, which is located at the forward end of the furnace, atone side of the door E of the same.

The letter Gr indicates an opening at the rear of thecombustion-chamber, provided with a door, H, by means of which cold airmay be permitted to enter the furnace to regulate the heat of the same,to prevent the burning of the sirup.

The letter I indicates a chute located at one side of the furnace, andleading intothe same. The said chute is provided with a hinged cover ordoor, K, formed of two hinged sections, by means of which the said chutemaybe opened or closed at will. The said chute is intended for theinsertion of the refuse stalks of the sorghum, when such is employed asfuel, to prevent the same from smothering the fire,

(No model.)

which would occur if inserted through the door at the front, which wouldcheck the fire, and by retarding the boiling of the juice would resultin the production of a dark and inferior grade of sirup.

The letter L indicates the evaporating-pan, which is constructed ofsuitable material, and is of such size and shape as to fit neatly uponthe top of the furnace. The said pan is divided into three compartments,M,N, and O, by means of the partitions P and R, which are provided withgates S, by means of which the sirup may be transferred from onecompartment to another at will, as required. The partition I, at itsgate, is provided with a strainer, T, by means of which the sirup may bestrained in its passage, and the compartment 0 is provided with a gateand spout, U, by means of which the sirup may be discharged into asuitable receptacle.

The operation of my invention is as follows: The juice to be evaporatedis placed in the compartment M, which is immediately over the fire-boxand combustion-chamber of the furnace, and is subjected to the directheat of the fire until evaporated to a proper consistency, after whichit is successively transferred to the compartments N and O as it becomesthickened, and more liable to burn, being gradually evaporated at alower temperature.

When ordinary fuel is employed it is fed, in the usual manner, throughthe door at the front of the furnace but when refuse cane is employed'itis'fed through thechute at the side. When there is danger of burning thesirup, the door at the rear of the furnace is opened and airadmitted tothe furnace, to regulate the draft and decrease the heat.

I am aware that tortuous chambers and tortuous outlets therefrom inevaporating-pans are old and well known; and I am also aware that it isnot new to burn the bagasse as fuel, and such ,is not sought to becovered in this application.

I deem the chute I K at the side, and near the end at which thefeed-door is situated, of importance, as the refuse bagasse may be fedto the fire without cooling the liquid or smothering the fire.

Having thus described my invention, what I claim is- In asorghum-evaporator, the furnace formed into a direct flue and areturn-flue by a partial partition, and having the bagasse-feeding flueI K on one side only, within easy and convenient reach with the door E,and hav- 5 ing heat and draft regulating door H G, the pan L, having apartition upon the same plane and directly above the furnaoe-1:artitioi1, said pan having three compartments communicating by gates,and the first gate-opening hav- 10 in g a screen, the whole constructed,combined,

and adapted to have the flow of liquor correspond with the flow of theproducts of combustion, to regulate the heat and to conveniently supplythe refuse bagasse, as specified.

In testimony whereof I affix my signature 15 in presence of twowitnesses.

CHRISTOPHER AU'lENRIETH. Witnesses:

T. J. WYANT, W. D. PRATT.

